linux-kernel - Re: [PATCH v8 06/13] arch/resctrl: Initialize the resource functions that are different

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Message-ID: <20181120120519.GE2527@zn.tnic>
Date:   Tue, 20 Nov 2018 13:05:20 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     "Moger, Babu" <Babu.Moger@....com>
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Subject: Re: [PATCH v8 06/13] arch/resctrl: Initialize the resource functions
 that are different

On Tue, Nov 20, 2018 at 10:59:18AM +0100, Borislav Petkov wrote:
> So I'm wondering: instead of having mba_wrmsr_intel() and
> mba_wrmsr_amd() and adding those per-vendor initialization functions,
> why don't you push down the vendor differentiation into mba_wrmsr()?
> 
> Then in that function you do
> 
> 	if (vendor == X86_VENDOR_INTEL)
> 		__mba_wrmsr_intel();
> 	else if (vendor == X86_VENDOR_AMD)
> 		__mba_wrmsr_amd();
> 
> and so on and then you don't have to do any of that initialization dance
> here and the struct rdt_resource assignment for the MBA will remain
> nicely similar to the other ones...
> 
> Hmmm?

Yeah, after having look at the patchset further, that might not be a
good idea as you need to assign more per-vendor stuff than just an MSR
accessor function...

-- 
Regards/Gruss,
    Boris.

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